VRf: DDE with Compumotor DDE Server

I realize this is a long-shot, but has anyone out there used Compumotor'sDDE Server with Vee and it's DDE Client?

What I'm looking for are the transaction specifics to read and write data toand from their AT6XX0 series cards... I can send commands (ie: DRIVE1111 ormotion commands), but can't get variables read back.